Oneida Suzuki still has the Gen 1 Suzuki "factory" double bubble on sale for $39. It is very nicely made. I still prefer the looks of the stock windscreen which is lower and sleeker, but the double bubble let's me see the instruments much better and shapes the airflow nicely.
Shipping from Oneida is a little high, but add in something else (say the centerstand kit!) and it's all very reasonable. Also check their prices on oil filters - very good.